First non-trivial chiral corrections to the magnetic moments of triplet (T) and sextet (S^(*)) heavy baryons are calculated using Heavy Hadron Chiral Perturbation Theory. Since magnetic moments of the T-hadrons vanish in the limit of infinite heavy quark mass (m_Q->infinity), these corrections occur at order O(1/(m_Q \Lambda_\chi^2)) for T-baryons while for S^(*)-baryons they are of order O(1/\Lambda_\chi^2). The renormalization of the chiral loops is discussed and relations among the magnetic moments of different hadrons are provided. Previous results for T-baryons are revised.
@article{arxiv.hep-ph/9905488,
title = {Magnetic Moments of Heavy Baryons},
author = {M. C. Banuls and I. Scimemi and J. Bernabeu and V. Gimenez and A. Pich},
journal= {arXiv preprint arXiv:hep-ph/9905488},
year = {2009}
}
Comments
11 Latex pages, 2 figures, to be published in Phys.Rev.D